My kids loved winnie the pooh, dumbo of course, it's a small world, peter pan, the jungle cruise and surprisingly the Haunted Mansion. They pretty much loved anything with lots of colors and interesting things to look at. They thought Buzz was great. The biggest problem we had was taking them out of the ride when it was done as they wanted to go on again and again.
My children were terrified of the characters though. Many children and not, but mine would tense up and almost scream whenever a character came near them.
Have a great trip
kathe